bool SkPDFImage::populate(SkPDFCatalog* catalog) { if (getState() == kUnused_State) { // Initializing image data for the first time. // Fallback method if (!fStreamValid) { SkAutoTDelete<SkStream> stream( extract_image_data(fBitmap, fSrcRect, fIsAlpha, NULL)); this->setData(stream); fStreamValid = true; } return INHERITED::populate(catalog); } #ifndef SK_NO_FLATE else if (getState() == kNoCompression_State) { // Compression has not been requested when the stream was first created, // but the new catalog wants it compressed. if (!getSubstitute()) { SkPDFStream* substitute = SkNEW_ARGS(SkPDFImage, (*this)); setSubstitute(substitute); catalog->setSubstitute(this, substitute); } return false; } #endif // SK_NO_FLATE return true; }
bool SkPDFImage::populate(SkPDFCatalog* catalog) { if (getState() == kUnused_State) { // Initializing image data for the first time. SkDynamicMemoryWStream dctCompressedWStream; if (!skip_compression(catalog) && fEncoder && get_uncompressed_size(fBitmap, fSrcRect) > 1) { SkBitmap subset; // Extract subset if (!fBitmap.extractSubset(&subset, fSrcRect)) { return false; } size_t pixelRefOffset = 0; SkAutoTUnref<SkData> data(fEncoder(&pixelRefOffset, subset)); if (data.get() && data->size() < get_uncompressed_size(fBitmap, fSrcRect)) { this->setData(data.get()); insertName("Filter", "DCTDecode"); insertInt("ColorTransform", kNoColorTransform); insertInt("Length", this->dataSize()); setState(kCompressed_State); return true; } } // Fallback method if (!fStreamValid) { SkAutoTUnref<SkStream> stream( extract_image_data(fBitmap, fSrcRect, fIsAlpha, NULL)); this->setData(stream); fStreamValid = true; } return INHERITED::populate(catalog); } else if (getState() == kNoCompression_State && !skip_compression(catalog) && (SkFlate::HaveFlate() || fEncoder)) { // Compression has not been requested when the stream was first created, // but the new catalog wants it compressed. if (!getSubstitute()) { SkPDFStream* substitute = SkNEW_ARGS(SkPDFImage, (*this)); setSubstitute(substitute); catalog->setSubstitute(this, substitute); } return false; } return true; }
// static SkPDFImage* SkPDFImage::CreateImage(const SkBitmap& bitmap, const SkIRect& srcRect) { if (bitmap.colorType() == kUnknown_SkColorType) { return NULL; } bool isTransparent = false; SkAutoTDelete<SkStream> alphaData; if (!bitmap.isOpaque()) { // Note that isOpaque is not guaranteed to return false for bitmaps // with alpha support but a completely opaque alpha channel, // so alphaData may still be NULL if we have a completely opaque // (or transparent) bitmap. alphaData.reset( extract_image_data(bitmap, srcRect, true, &isTransparent)); } if (isTransparent) { return NULL; } SkPDFImage* image; SkColorType colorType = bitmap.colorType(); if (alphaData.get() != NULL && (kN32_SkColorType == colorType || kARGB_4444_SkColorType == colorType)) { if (kN32_SkColorType == colorType) { image = SkNEW_ARGS(SkPDFImage, (NULL, bitmap, false, SkIRect::MakeWH(srcRect.width(), srcRect.height()))); } else { SkBitmap unpremulBitmap = unpremultiply_bitmap(bitmap, srcRect); image = SkNEW_ARGS(SkPDFImage, (NULL, unpremulBitmap, false, SkIRect::MakeWH(srcRect.width(), srcRect.height()))); } } else { image = SkNEW_ARGS(SkPDFImage, (NULL, bitmap, false, srcRect)); } if (alphaData.get() != NULL) { SkAutoTUnref<SkPDFImage> mask( SkNEW_ARGS(SkPDFImage, (alphaData.get(), bitmap, true, srcRect))); image->insert("SMask", new SkPDFObjRef(mask))->unref(); } return image; }